http://l3tczdiiwoo63iwxty4lhs6p7eaxop5micbn7vbliydgv63x5zrrrfyd.onion/user-manual/startup.html
--user USER[.GROUP] After (optionally) writing the PID file, assume the user ID of USER , and if included the GID of GROUP. Exit if the privileges are not sufficient to do
so. Unix only. --chroot Before changing to the user ID given in the --user option, chroot to that user's home directory, i.e. make the kernel pretend to the Privoxy process that the directory tree starts there.